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color.h
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#ifndef COLOR_H
#define COLOR_H
struct strbuf;
/*
* The maximum length of ANSI color sequence we would generate:
* - leading ESC '[' 2
* - reset ';' .................1
* - attr + ';' 2 * num_attr (e.g. "1;")
* - no-attr + ';' 3 * num_attr (e.g. "22;")
* - fg color + ';' 17 (e.g. "38;2;255;255;255;")
* - bg color + ';' 17 (e.g. "48;2;255;255;255;")
* - terminating 'm' NUL 2
*
* The above overcounts by one semicolon but it is close enough.
*
* The space for attributes is also slightly overallocated, as
* the negation for some attributes is the same (e.g., nobold and nodim).
*
* We allocate space for 7 attributes.
*/
#define COLOR_MAXLEN 75
#define GIT_COLOR_NORMAL ""
#define GIT_COLOR_RESET "\033[m"
#define GIT_COLOR_BOLD "\033[1m"
#define GIT_COLOR_BLACK "\033[30m"
#define GIT_COLOR_RED "\033[31m"
#define GIT_COLOR_GREEN "\033[32m"
#define GIT_COLOR_YELLOW "\033[33m"
#define GIT_COLOR_BLUE "\033[34m"
#define GIT_COLOR_MAGENTA "\033[35m"
#define GIT_COLOR_CYAN "\033[36m"
#define GIT_COLOR_WHITE "\033[37m"
#define GIT_COLOR_DEFAULT "\033[39m"
#define GIT_COLOR_BOLD_BLACK "\033[1;30m"
#define GIT_COLOR_BOLD_RED "\033[1;31m"
#define GIT_COLOR_BOLD_GREEN "\033[1;32m"
#define GIT_COLOR_BOLD_YELLOW "\033[1;33m"
#define GIT_COLOR_BOLD_BLUE "\033[1;34m"
#define GIT_COLOR_BOLD_MAGENTA "\033[1;35m"
#define GIT_COLOR_BOLD_CYAN "\033[1;36m"
#define GIT_COLOR_BOLD_WHITE "\033[1;37m"
#define GIT_COLOR_BOLD_DEFAULT "\033[1;39m"
#define GIT_COLOR_FAINT_BLACK "\033[2;30m"
#define GIT_COLOR_FAINT_RED "\033[2;31m"
#define GIT_COLOR_FAINT_GREEN "\033[2;32m"
#define GIT_COLOR_FAINT_YELLOW "\033[2;33m"
#define GIT_COLOR_FAINT_BLUE "\033[2;34m"
#define GIT_COLOR_FAINT_MAGENTA "\033[2;35m"
#define GIT_COLOR_FAINT_CYAN "\033[2;36m"
#define GIT_COLOR_FAINT_WHITE "\033[2;37m"
#define GIT_COLOR_FAINT_DEFAULT "\033[2;39m"
#define GIT_COLOR_BG_BLACK "\033[40m"
#define GIT_COLOR_BG_RED "\033[41m"
#define GIT_COLOR_BG_GREEN "\033[42m"
#define GIT_COLOR_BG_YELLOW "\033[43m"
#define GIT_COLOR_BG_BLUE "\033[44m"
#define GIT_COLOR_BG_MAGENTA "\033[45m"
#define GIT_COLOR_BG_CYAN "\033[46m"
#define GIT_COLOR_BG_WHITE "\033[47m"
#define GIT_COLOR_BG_DEFAULT "\033[49m"
#define GIT_COLOR_FAINT "\033[2m"
#define GIT_COLOR_FAINT_ITALIC "\033[2;3m"
#define GIT_COLOR_REVERSE "\033[7m"
/* A special value meaning "no color selected" */
#define GIT_COLOR_NIL "NIL"
/*
* The first three are chosen to match common usage in the code, and what is
* returned from git_config_colorbool. The "auto" value can be returned from
* config_colorbool, and will be converted by want_color() into either 0 or 1.
*/
#define GIT_COLOR_UNKNOWN -1
#define GIT_COLOR_NEVER 0
#define GIT_COLOR_ALWAYS 1
#define GIT_COLOR_AUTO 2
/* A default list of colors to use for commit graphs and show-branch output */
extern const char *column_colors_ansi[];
extern const int column_colors_ansi_max;
/*
* Generally the color code will lazily figure this out itself, but
* this provides a mechanism for callers to override autodetection.
*/
extern int color_stdout_is_tty;
/*
* Use the first one if you need only color config; the second is a convenience
* if you are just going to change to git_default_config, too.
*/
int git_color_config(const char *var, const char *value, void *cb);
int git_color_default_config(const char *var, const char *value, void *cb);
/*
* Parse a config option, which can be a boolean or one of
* "never", "auto", "always". Return a constant of
* GIT_COLOR_NEVER for "never" or negative boolean,
* GIT_COLOR_ALWAYS for "always" or a positive boolean,
* and GIT_COLOR_AUTO for "auto".
*/
int git_config_colorbool(const char *var, const char *value);
/*
* Return a boolean whether to use color, where the argument 'var' is
* one of GIT_COLOR_UNKNOWN, GIT_COLOR_NEVER, GIT_COLOR_ALWAYS, GIT_COLOR_AUTO.
*/
int want_color_fd(int fd, int var);
#define want_color(colorbool) want_color_fd(1, (colorbool))
#define want_color_stderr(colorbool) want_color_fd(2, (colorbool))
/*
* Translate a Git color from 'value' into a string that the terminal can
* interpret and store it into 'dst'. The Git color values are of the form
* "foreground [background] [attr]" where fore- and background can be a color
* name ("red"), a RGB code (#0xFF0000) or a 256-color-mode from the terminal.
*/
int color_parse(const char *value, char *dst);
int color_parse_mem(const char *value, int len, char *dst);
/*
* Output the formatted string in the specified color (and then reset to normal
* color so subsequent output is uncolored). Omits the color encapsulation if
* `color` is NULL. The `color_fprintf_ln` prints a new line after resetting
* the color. The `color_print_strbuf` prints the contents of the given
* strbuf (BUG: but only up to its first NUL character).
*/
__attribute__((format (printf, 3, 4)))
int color_fprintf(FILE *fp, const char *color, const char *fmt, ...);
__attribute__((format (printf, 3, 4)))
int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...);
void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb);
/*
* Check if the given color is GIT_COLOR_NIL that means "no color selected".
* The caller needs to replace the color with the actual desired color.
*/
int color_is_nil(const char *color);
#endif /* COLOR_H */